title: Establishment and characterization of an immortal macrophage-like cell line inducible to differentiate to osteoclasts.
abstract: Osteoclasts are hematopoietic cells essential for bone remodeling and resorption. To understand the process of osteoclast development, we established a macrophage-like cell line C7 that has the potential to differentiate into functional osteoclasts; multinuclear tartrate-resistant acid phosphatase positive cells capable of forming pits on dentin slices. C7 cells share the characteristics of their cell surface molecules and phagocytic activity with macrophages. Generation of osteoclasts from C7 cells was mostly suppressed by the addition of a function-blocking antibody directed to c-Fms, the receptor for macrophage-colony stimulating factor (M-CSF), or by osteoclastogenesis inhibitory factor (OCIF). These responses correspond well with the osteoclast precursors present in bone marrow and peritoneal cavity. Reagents such as bacterial lipopolysaccharide and granulocyte/macrophage-CSF that are known to act as inducers for other cell lineages rather than osteoclasts abolished the potential of osteoclastogenesis in C7 cells. These phenotypes of C7 cells have been stably maintained for more than 2 years. We believe that the cell line established in this study will provide an important tool for osteoclast biology.
authors.affiliation: Department of Immunology, School of Life Science, Faculty of Medicine, Tottori University, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Miyamoto
authors.forename: T
authors.initials: T
authors.lastname: Kunisada
authors.forename: H
authors.initials: H
authors.lastname: Hemmi
authors.forename: T
authors.initials: T
authors.lastname: Yamane
authors.forename: H
authors.initials: H
authors.lastname: Yasuda
authors.forename: K
authors.initials: K
authors.lastname: Miyake
authors.forename: H
authors.initials: H
authors.lastname: Yamazaki
authors.forename: S I
authors.initials: SI
authors.lastname: Hayashi
mesh_terms: D000906:Antibodies / Q000276:immunology / Q000494:pharmacology; D001854:Bone Marrow Cells / Q000378:metabolism; D002454:Cell Differentiation / Q000502:physiology*; D002455:Cell Division; D002460:Cell Line; D005434:Flow Cytometry; D006023:Glycoproteins / Q000494:pharmacology; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000494:pharmacology; D006133:Growth Substances / Q000494:pharmacology; D008070:Lipopolysaccharides / Q000494:pharmacology; D016173:Macrophage Colony-Stimulating Factor / Q000494:pharmacology; D008264:Macrophages / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D010010:Osteoclasts / Q000166:cytology / Q000378:metabolism*; D053244:Osteoprotegerin; D010641:Phenotype; D016186:Receptor, Macrophage Colony-Stimulating Factor / Q000276:immunology; D018160:Receptors, Cytoplasmic and Nuclear; D018124:Receptors, Tumor Necrosis Factor; D011994:Recombinant Proteins
chemical_list: D000906:Antibodies; D006023:Glycoproteins; D006133:Growth Substances; D008070:Lipopolysaccharides; D053244:Osteoprotegerin; D018160:Receptors, Cytoplasmic and Nuclear; D018124:Receptors, Tumor Necrosis Factor; D011994:Recombinant Proteins; D016173:Macrophage Colony-Stimulating Factor; D016178:Granulocyte-Macrophage Colony-Stimulating Factor; D016186:Receptor, Macrophage Colony-Stimulating Factor